• (num a, num b) -> num          = log_a(b)
  (num a, str b) -> [str]        = [char * a for char in b]
  (str a, num b) -> [str]        = [char * b for char in a]
  (str a, str b) -> str          = a.with_capitalisation_of(b)
  (lst a, lst b) -> [any]        = a molded to the shape of b
  (otherwise)                    = vectorise

¿ (any a, *b)                    = apply element if a is truthy - <element>¿

ω  (any a, any? b, any? c) -> [any, any] = apply last two elements "parallel" and collect - equivalent to ψ"

ω  (any a, any? b, any? c) -> [any] = apply last two elements "parallel" and collect - equivalent to ψ"

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